Speaking only for myself, I don't want to run my own firewall server. I want a reliable firewall service that I can use, and is multi-region/multi-az with load

Speaking only for myself, I don't want to run my own firewall server. I want a reliable firewall service that I can use, and is multi-region/multi-az with load balancing and other features that I cannot feasibly implement myself. At least, not without spending a great deal of my time or a great deal of my personal money to build a suitable rugged production-grade service.